Fyodor Dostoyevsky

If you wish to glimpse inside a human soul and get to know a man, don't bother analyzing his ways of being silent, of talking, of weeping, of seeing how much he is moved by noble ideas; you will get better results if you just watch him laugh. If he laughs well, he's a good man.
― Fyodor Dostoyevsky

The cleverest of all, in my opinion, is the man who calls himself a fool at least once a month.
― Fyodor Dostoyevsky